身边的经济学·社会常识英语30篇（4）
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Why Cities Build Parks and Roads
城市为何修建公园和道路？
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Parks and roads are built for everyone—not just one person.
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No one can be kept out if they follow the rules.
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They cost money, but no shop sells tickets to walk down Main Street.
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Governments collect taxes to pay for these shared things.
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Good roads help buses run on time and trucks carry goods fast.
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Parks give kids safe play space and adults quiet rest time.
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These services are hard to split up—so we share them fairly.
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They make life easier, healthier, and more connected for all.